package com.wangjie.interfaceDemo;

public class Demo implements InterfaceDemo {
    @Override
    public void out() {
        System.out.println("hello world");
    }

    @Override
    public void in() {
        System.out.println("hello in");
    }

    public static void main(String[] args) {
        Demo demo = new Demo();
        demo.out();
    }
}
